Could I be pregnant?

Hello,

I have been experiencing some symptoms lately. It all started with dizziness. Now I am experiencing a lot of cramps (like period cramps). Lower back pain as well as some spotting (brownish). I have tried like 10 home pregnancy tests but they all come out negative. Today I have been craving for certain foods. I am also feeling super sensitive lately. I never get cramps not even when my period is coming and my back never hurts. Can I be pregnant?